Wi-fi reversing camera

[littlespark]

Bought one of these things thinking it would be simpler than running a signal line from the back of the van.

The instruction are written in translated Chinese, and my “Chinglish” isn’t so good.

So I’ve got a red, yellow and black wire at the camera. Connected red and black to + and - of reversing light. Yellow is not attached to anything.
With ignition on(but engine not running) I get the image on my iPad, which I’m going to be using as the screen. As soon as I start the engine, the Wi-fi is disrupted and I lose signal.

I’m thinking the red needs power all the time, and the yellow is the signal that I’m reversing. But it works when stationary, why not when moving??

 

[buzzlightyear]

But it works when stationary, why not when moving??

Have you lost signal, I'm trying to down load the constructions..

 

[littlespark]

I posted photos of the instructions.
Thinking it over in my head, when I turn the key to start the engine, there’s a momentary cut in power to the reversing lights... enough to disrupt the power to the cam, and therefor the Wi-fi.
Thinking some interference? But it’s at the wrong end of the van to be affected by moving engine parts

 

[DPG]

Maybe yellow is to trigger it from the reversing light feed. Where's page 4?

 

[Spoon]

Where's page 4?

Isn't page 4 the first pic, top? Begins with "12V+ positive,"...
I'm presuming the manual is 1 sheet. The bottom pic is the reverse side of the top pic.

 

[littlespark]

Pages 4,1,2,3. It’s a double sided paper folded in half to make a book.

yes. Yellow says it’s reversing signal, so how does it work without this connected?

but only works when engine isn’t running

I might try connecting both red and yellow to reversing lamp +ve

 

[DPG]

Isn't page 4 the first pic, top? Begins with "12V+ positive,"...
I'm presuming the manual is 1 sheet. The bottom pic is the reverse side of the top pic.

Strange, I couldn't see that earlier!

 

[littlespark]

Bad photo. The 4 and the 1 aren’t showing

 

[DPG]

Bad photo. The 4 and the 1 aren’t showing

I couldn't even see both pages earlier. Not sure why.

Anyway, I would definitely try connecting both yellow and red to +12V. Worth a go. What about a large value electrolytic capacitor right at the camera end of the supply cables?

 

[kropaske]

I think you need red as +12V, black GND and yellow to reverse light +12V